Method of converting oxygen into ozone.



No. 743,431. PATENTED NOV. 10, 1903.

' 'P. s. BLAOKMARR & J. L. WILLFORD.

METHOD OF CONVERTING OXY BN INTO OZONE. APPLICATION FILED APR. 26. 1902.

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s'rn'rns Patented November 10, 1903.

.hnrnur @rrrcm FREDERlCK S; BLAOKMARR AND JOSEIH L. WILLFORD, OF MINNEAPOLIS,

MINNESOTA.

itlE'l'l-iGD 6F CGNVERTHNG OXYGEN lNTQ @ZQNE.

v SPECIFICATION forming part of Letters Patent No. 743,431, dated November 10, 1903. Application filed April 26, 1902 Serial No. 104.823. (N0 specimens.)

vented a new and useful Method of Oonvertin g Oxygen into Ozone, of which the following is a specification.

Cur invention relates to improvements in the method of converting oxygen into ozone; and the object we have in view is to secure this result without the production of sparks, thereby avoiding the production of oxide.

in the accompanying drawings, forming part of this specification, Figure l is a plan view of an apparatus that may be used for carrying our invention into effect. Fig. 2 is a longitudinal section of the converter.

carrying out our invention we provide a wall of any dielectric substance, such as glass, mica, earthenware, lava, vulcanized rubber, or any other suitable material. This wall may be in any suitable form. We prefer to construct it in the form of a glass tube 2, having open ends.

3 represents a suitable storage or other oattery, or it may be an electric generator instead.

i represents an ordinary induction-coil provided with a suitable circuit-breaker 5, said coil being in circuit with the battery 3. lhe

glass tube 2 is provided on its outer surface with a number of metallic coils 6 and upon itsinner surface with a numberof longitudinal wires These two sets of wires are preferably arranged one within and the other without the glass tube, the inner wires being all preferably connected by the series of bands or coils 9. The wires upon the outer surface and the wires upon the inner surface of the glass tube form the terminals of the secondary electric circuit of the induction-coil, and the glass tube is a dielectric substance arranged between said terminals, so that we secure a silent discharge of electricity from one terminal to the other through the glass tube or wall. This tube or wall prevents any sparking or" the electric current, thereby causing a silent or glow discharge. He may provide any suitable means for passing oxygen or air through the converter-tube 2 or along the wall of the dielectric, and thus into the field of the silent electric discharge. We have here shown a suitable fan 10, arranged within a casing 11, that is connected to one end of the converter 2. The fan 10 is driven, preferably, by a suit- 5 able electric-motor 12, and said motor is connected to the battery 3 by suitable wires 13.

From the ind uction-coil 4 wires 14 and 15 ex tend to the terminals connected with the converter. The wire 14, as here shown, extends 6 to the series of wires or coils 6, arranged upon the outside of the converter, and the wire 15 extends to the series of wires '7, arrau ged upon the inside of the converter.

Our method of converting oxygen into ozone consists in applying an interrupted electric current to the opposite sides of a wall formed of a dielectric substance or material. With the apparatus that we have illustrated in the drawings this wall is in the forrnof a glass tube or cylinder, and the interrupted electric current is applied to the opposite sides of this wall through the terminals of the secondary circuit of the-induction-coil, one of said terminals consisting of the series of wires upon the inner surface of the cylinder and the other terminal consisting of a series-0f wires upon the outerssurface of the cylinder. interposition of the dielectric substance between the terminals of the induction-coil prevents any sparking between said terminals and causes a continuous silent discharge from one terminal to the other through the wall of the tube or cylinder. OXygen of the air which is brought in proximity to the inner wall of the tube or cylinderis by the action of the electric current condensed and converted into ozone. When pure oxygen is passed through the tube,

'pure ozone will be produced. Ordinarily,

however, we pass atmospheric air through the cylinder, and czonized air is the result of the process. This ozonized air may be used for many different purposes. it may be used for inhaling or for other applications to the human body. it may be used as a disinfectant or germicide. It may be used in house or hospital ventilation and for the treatment of meats or other perishable articles. it may also be applied with especially favorable resuits to the ozonizing of water. By impregnating water with the ozon'ized air nearly all of the bacteria in the water will be destroyed.

We have demonstrated by accurate tests that by this method ninety per cent. of 'the bacteriain water may be destroyed.

It is the aim of our process to provide a greater quantity of oxygen than normal in any given Volume of air. We do not attempt to diminish the nitrogen of the air, but by increasing the density of the oxygen we secure three parts of oxygen in place of two parts in the same volume of air. In other words, we convert three parts of oxygen into two parts of its allotropic form, ozone, and hence we increase the density of the oxygen and add to the amount that is in the air that is inhaled or used for other purposes. It is a gas that may readily be breathed without deleterious affects, and it is very beneficial in cases of :atarrhal and bronchial afiections or of any iiseasesof the respiratory organs. It is also a. germicide and disinfectant of great merit.

We do not in this application claim the apparatus herein shown and described, having zlaimed the same in a separate application, Serial No. 104,829, filed April 26, 1902.

'We claim as our invention-- 1. The method of converting oxygen into ozone, consistingin applying an induced electric current to the opposite sides of a wall of dielectrical material,through terminals which are at all points in contact with said wall, and passing air or oxygen along said wall, in proximity to one of said terminals.

. 2. The method of converting oxygen into ozone, consisting in applying an induced electric current to the inner and outer surfaces of a tube formed of dielectric material through electric terminals, each of which is at all points in contact with one of the surfaces of said tube, and passing air or oxygen through said tube.

In witness whereof we have hereunto set our hands this 22d day of April, 1902.

In presence of- A. 0. PAUL, (J. G. HANSON. 

